Three-way shock-absorbing stand with variable rigidity and damping

Abstract

A vibration proof base with flexible rigidity and damp is composed by a vertical base and a horizontal vibration proof part. The base includes a top and bottom connection board with a pre-pressed spring and a lead damper in cross fixed in between; a counterpoise spring of flexible rigidity is installed in the pre-pressed spring. The top end of the counterpoise spring insert into a hole on the counterpoise board fixed to the top connection board with the end free. The lead damper is composed by a vertical cross tie bar, lead block, cross groove splint and damping bolt.

Description

Technical field: [0001] The invention relates to a three-way vibration isolation / seismic support with variable stiffness and variable damping, which belongs to the field of structural vibration control. Background technique: [0002] With the continuous development of urban rail transit and elevated lines, the environmental vibration induced by rail transit and elevated lines has become more and more harmful to the health of urban residents; the population of large and medium-sized cities has increased sharply, and the utilization rate of urban space has continued to increase. More and more buildings are built close to traffic lines, which makes the impact of environmental vibration on people more prominent. Research shows that the environmental vibration caused by rail transit and elevated lines is mainly vertical vibration. However, the control of environmental vibration The means and technology are not yet mature enough, and there are currently no formed environmental vib...

AI Technical Summary

Problems solved by technology

[0004] For the vertical seismic isolation of structures, foreign scholars have proposed some three-dimensional seismic isolation bearings, but due to the high vertical stiffness, it is difficult to provide the damping required to isolate the vertical seismic action within a limited range, and the vertical energy consumption The capacity and isolation effect are limited; domestic scholars have also proposed the use of disc springs to isolate vertical vibrations, creating a precedent for the study of horizontal / vertical isolation bearings in my country; but because disc springs are vertical load-bearing components, The vertical stiffness is relatively large, which has little effect on isolating environmental vibrations, and the disc spring cannot provide tensile capacity, which bury hidden dangers for the seismic isolation structure when an earthquake comes

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